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<div><span></span>Hello Pavel,</div><div>The RTEMS version is 4.11-release.</div><div>Today, I download the latest 4.11-release with "fix cache corruption bugs" patch, and build it. I use the new tool-chain and bsp to build my application and the bug remains. </div><div>And I check my appdl-symbol-table.o via arm-rtems4.11-nm, no "hello_world" (which is the function I want to jump to) found. Is it correct? I follow your instructions to get .prelink, to get symbol table, and to get the final image. Do you have any hints on this? Thank you.</div>
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<div><span><div style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE: 10pt"><div><font color="#0000ff">Best wishes,</font></div><div><font color="#0000ff">Tim Tian</font></div><div><font color="#0000ff">xuelin.tian@qkmtech.com</font></div></div></span></div>
<blockquote style="margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;"><div> </div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style="PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"><div><b>From:</b> <a href="mailto:ppisa4lists@pikron.com">Pavel Pisa</a></div><div><b>Date:</b> 2016-09-04 21:10</div><div><b>To:</b> <a href="mailto:xuelin.tian@qkmtech.com">xuelin.tian@qkmtech.com</a></div><div><b>CC:</b> <a href="mailto:users@rtems.org">users@rtems.org</a>; <a href="mailto:chrisj@rtems.org">Chris Johns</a></div><div><b>Subject:</b> Re: Simple question about RTL</div></div></div><div><div>Hello Tim Tian,</div>
<div> </div>
<div>On Sunday 04 of September 2016 14:52:44 xuelin.tian@qkmtech.com wrote:</div>
<div>> This problem drives me crazy.</div>
<div>></div>
<div>> I can use dlopen to load my object file, this part works fine. When I loaded the object file, it showed something like:</div>
<div>> > handle: 0x2a9bb0 loaded</div>
<div>></div>
<div>> And then I could get the address of this handle via dlsym,</div>
<div>></div>
<div>> > call = dlsym(handle, "hello_world");</div>
<div>> > if (call == NULL) {</div>
<div>> > printf("dlsym failed: symbol hello_world not found\n");</div>
<div>> > return 1;</div>
<div>> > }</div>
<div>> > printf("address: %x\n", call);</div>
<div>></div>
<div>> it said like:</div>
<div>> > address: 2aa3a1</div>
<div>></div>
<div>> But, when I continued to jump to the entry point of call, the system</div>
<div>> crashed.</div>
<div> </div>
<div>what is the RTEMS sources version?</div>
<div> </div>
<div>I have tested RTL on Zynq about last week and it worked correctly.</div>
<div>I use actual RTEMS master git sources.</div>
<div> </div>
<div>If you use RTEMS build before next patch then it is highly probable</div>
<div>that you experience failures on stargets with cache enabled.</div>
<div> </div>
<div> libdl/rtl-obj.c: synchronize cache after code relocation.</div>
<div> Pavel Pisa<pisa@cmp.felk.cvut.cz></div>
<div> 7/21/16 2:35 AM</div>
<div> </div>
<div>There is even another patch which synchronizes and cleans cache during startup</div>
<div> </div>
<div> arm/xilinx_zynq: ensure that cache is cleaned and MMU disabled when initialization starts.</div>
<div> Chris Johns<chrisj@rtems.org></div>
<div> Pavel Pisa<pisa@cmp.felk.cvut.cz></div>
<div> 8/31/16 4:49 PM</div>
<div> </div>
<div>It should not be crucial for UP (non SMP) use. But it would worth</div>
<div>to retest your actual RTEMS master version.</div>
<div> </div>
<div>If you are working with stable RTEMS 4.11 pre-release branch</div>
<div>then problems are not fixed there.</div>
<div> </div>
<div>I think that it would worth to consider whole cache related</div>
<div>issues update for 4.11 branch as well.</div>
<div> </div>
<div>Best wishes,</div>
<div> </div>
<div> Pavel</div>
<div> </div>
<div> </div>
<div> </div>
</div></blockquote>
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